UNIQUE & SPECIAL APPEARANCE: The design of these dog goggles perfectly conforms to the dog's face, so the slightly curved glasses cling precisely to your dog's face. At the same time, there are ventilation holes around the dog goggles that look like comb teeth, these dense holes can quickly dissipate the heat generated by the dog. LIGHTWEIGHT, SOFT & DURABLE: The pet sunglasses are formed by UV-resistant PC lenses and optical silicone frames, which have proven to be flexible and lightweight. They can be used for quite a long time. Your dog will feel very comfortable without any burden when wearing our goggles. ADJUSTABLE STRAP: The dog goggles have a high level of elasticity with adjustable length. They are suitable for small dogs and medium-sized dogs. The double strap - head strap and chin strap allows your dog to wear them securely. The goggles will not fall off easily. PROTECT YOUR DOG'S EYES: They not only provide good visibility for your dog, but the soft framework will not harm the fur on your dog's face and eyes. They can prevent ultraviolet rays, wind, blizzards, snow, dirt, and ash. All in all, they can protect your dog from harm in the external environment. DIMENSION MEASUREMENT: The head radian is 20 cm long and the height is 5 cm. The lower radian is 5.5 cm. The head strap extends from 16.5 cm-27.5 cm and the adjustment range of the chin strap is between 13-24 cm (tension-free measurement)